Optimism Governance is currently considering a pivotal upgrade to its OP Stack architecture, known as Proposal 20. This proposal introduces Super Root Dispute Games, which are designed to improve cross-chain verification and interoperability as the OP Stack expands across various chains. The publication provides the following information: this upgrade aims to enhance the overall efficiency and security of the network.
Governance Process for Proposal 20
The governance process for Proposal 20 is actively underway, with a target mainnet deployment date set for September 24, contingent upon necessary approvals. The introduction of Super Roots is particularly significant, as it offers a shared representation that can be contested through fault-proof mechanisms, effectively tackling the challenges of state verification across multiple chains.
Status of Upgrade 20
It is essential to highlight that Upgrade 20 remains a proposal and has not yet been implemented on the mainnet. If approved, this upgrade would advance the OP Stack towards a framework where cross-chain state can be verified using the same adversarial principles as rollup fault proofs. This would lay the technical foundation for a more interconnected Superchain, enhancing the overall functionality and efficiency of the network.
Recently, Optimism launched its Superchain interoperability upgrade on the Sepolia testnet, marking a significant step in enhancing cross-L2 communication. For more details, see the full report here.














